Bolt.



No. 732,817. PATENTED JULY 7, 1903.

0. 0. BAHLE.

BOLT.

APPLIOATION FILED MAY 12, 1902.

H0 MODEL.

I sting :0. wcmu-rna. WASHINGTON, a.

lilo. 732,817.

UNITED STATES Patented July 7, 1903.

1* Flues.

ATENT BOLT.

SPECIFICATION forming part of Letters Patent No. 732,817, dated July 7,1903. Application filcclMay 12, 1902. Ser al No. 106,873- (No model.)

To aZZ whom it may concern:

Be it known that I, OLE O. BAHLE, a citizen of the United States,residing at Fergus Falls,

in the county of Ottertail and State of Minnesota, have invented certainnew and useful Improvements in Bolts; and Ido hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention has for its object to provide means for preventing boltsfrom turning when screwing nuts onto the same and for preventing nutsfrom becoming accidentally loosened.

To the above ends the invention consists of the novel devices andcombinations of devices hereinafter described, and defined in theclaims.

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several views.

Figure l is a view principally in plan, but with some parts in section,showing a belt, a nut, and cooperating washers and embodying thefeatures of my invention. Figs. 2 and 3 p are transverse sections on theline w of Fig. 1, the former looking toward the head and the latterlooking toward the nut end of the said bolt. Fig. t is a section on theline a; x of Fig. 3. Fig. 5 is asection through the nut auditscooperating washer on the line a 00 of Fig. 3, the said parts beingshown as separated; and Fig. 6 is a plan view of the nut looking at theinner face thereof.

The numeral 1 indicates a bolt and the numeral 2 a nut, both ofordinaryconstruction except as'hereinafter specified. Anchoring brads orpins 3 project from the head of the bolt from diametrically oppositesides thereof and extend parallel with the bolt, or, in other words,longitudinally thereof. which cooperates with the head of the bolt andnormally lies against the same, is pro A washer 4,

radial grooves 6, which preferably extend to p the corners of the bolt,as best shown in Fig. 6. The washer 7, which cooperates with the not 2,is slightly depressed to fit the inner face of the nut and is providedwith radial ribs 8, which are adapted to fit the grooves 6 of said not 2and prevent the same from be ing accidentally turned byjars or otherlight forces.

As is evident, this belt is especially designed for use in connectionwith woodwork or timbers or other soft materials, into which theanchoring pins or brads 3 may be pressed when the nut is tightened orwhen the bolt is driven to thereby anchor the said bolt against rotarymovements.

The device described is simple, efficient, and of small cost, and it mayof course be somewhat modified within the scope of my invention asherein set forth and claimed.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

1. The combination with a bolt, the head of which is provided with oneor more anchoring pins or brads projecting longitudinally of the bolt,of a washer perforated to pass the said anchoring pin or brad,substantially as described.

2. The combination with a bolt, the head of which is provided atdiametrically opposite points with pins or brads projectinglongitudinally of the bolt, a washer having perforations through whichsaid anchoring pins or brads may project, substantially as described.

In testimony whereof I affixi my signature in presence of two witnesses.

OLE O. BAHLE. Witnesses:

A. B. ERIOKSON, KNUT P. BAHLE.

